89871cdeb6
optional attributes field. - Add a 'machdep.smap' sysctl that exports the SMAP table of the running system as an array of the ACPI 3.0 structure. (On older systems, the attributes are given a value of zero.) Note that the sysctl only exports the SMAP table if it is available via the metadata passed from the loader to the kernel. If an SMAP is not available, an empty array is returned. - Add a format handler for the ACPI 3.0 SMAP structure to the sysctl(8) binary to format the SMAP structures in a readable format similar to the format found in boot messages. MFC after: 2 weeks
122 lines
3.6 KiB
C
122 lines
3.6 KiB
C
/*-
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* Copyright (c) 1997 Michael Smith
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* Copyright (c) 1998 Jonathan Lemon
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_PC_BIOS_H_
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#define _MACHINE_PC_BIOS_H_
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/*
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* Int 15:E820 'SMAP' structure
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*/
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#define SMAP_SIG 0x534D4150 /* 'SMAP' */
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#define SMAP_TYPE_MEMORY 1
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#define SMAP_TYPE_RESERVED 2
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#define SMAP_TYPE_ACPI_RECLAIM 3
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#define SMAP_TYPE_ACPI_NVS 4
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#define SMAP_TYPE_ACPI_ERROR 5
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#define SMAP_XATTR_ENABLED 0x00000001
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#define SMAP_XATTR_NON_VOLATILE 0x00000002
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#define SMAP_XATTR_MASK (SMAP_XATTR_ENABLED | SMAP_XATTR_NON_VOLATILE)
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struct bios_smap {
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u_int64_t base;
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u_int64_t length;
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u_int32_t type;
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} __packed;
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/* Structure extended to include extended attribute field in ACPI 3.0. */
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struct bios_smap_xattr {
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u_int64_t base;
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u_int64_t length;
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u_int32_t type;
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u_int32_t xattr;
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} __packed;
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/*
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* System Management BIOS
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*/
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#define SMBIOS_START 0xf0000
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#define SMBIOS_STEP 0x10
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#define SMBIOS_OFF 0
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#define SMBIOS_LEN 4
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#define SMBIOS_SIG "_SM_"
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struct smbios_eps {
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uint8_t anchor_string[4]; /* '_SM_' */
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uint8_t checksum;
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uint8_t length;
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uint8_t major_version;
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uint8_t minor_version;
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uint16_t maximum_structure_size;
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uint8_t entry_point_revision;
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uint8_t formatted_area[5];
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uint8_t intermediate_anchor_string[5]; /* '_DMI_' */
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uint8_t intermediate_checksum;
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uint16_t structure_table_length;
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uint32_t structure_table_address;
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uint16_t number_structures;
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uint8_t BCD_revision;
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};
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struct smbios_structure_header {
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uint8_t type;
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uint8_t length;
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uint16_t handle;
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};
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#ifdef _KERNEL
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#define BIOS_PADDRTOVADDR(x) ((x) + KERNBASE)
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#define BIOS_VADDRTOPADDR(x) ((x) - KERNBASE)
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struct bios_oem_signature {
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char * anchor; /* search anchor string in BIOS memory */
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size_t offset; /* offset from anchor (may be negative) */
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size_t totlen; /* total length of BIOS string to copy */
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} __packed;
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struct bios_oem_range {
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u_int from; /* shouldn't be below 0xe0000 */
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u_int to; /* shouldn't be above 0xfffff */
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} __packed;
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struct bios_oem {
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struct bios_oem_range range;
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struct bios_oem_signature signature[];
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} __packed;
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int bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen);
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uint32_t bios_sigsearch(uint32_t start, u_char *sig, int siglen, int paralen,
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int sigofs);
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void bios_add_smap_entries(struct bios_smap *smapbase, u_int32_t smapsize,
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vm_paddr_t *physmap, int *physmap_idx);
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#endif
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#endif /* _MACHINE_PC_BIOS_H_ */
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